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OSI Model Layers  Application  Presentation  Session  Transport  Network  Data Link  Physical Will OSI Model Layers communicate with different layers  No, only talk to the same layer on the other device. Can OSI Layer 2 communicate will layer 5  No, OSI Layers can only communicate with layers one above or below. What is the Purpose of the OSI Model  Provide a model to describe how data moves from source device to destination device. ~ 1 ~ for inquiry...

What is the structure of voltage-gated Na+ channels  Form from single polypeptide (alpha subunit) - 4 domains arranged in a pore  -> Domains contain 6 alpha helices  -> Beta subunits affect rate of activation/inactivation What happens to the structure of these channels upon activation  S4 segment contains many +ve charged AA residues - Depolarisation causes S4 to move outwards  -> Conformational change opens channel pore  -> Inactivation is key for UNId...

Radiation  Energy carried by waves or streams of particles X-radiation  a high-energy radiation produced by the collision of a beam of electrons with a metal target in an x-ray tube X-ray  A beam of energy that has the power to penetrate substances and record image shadows on photographic film Radiology  study of X rays and radioactive substances and their uses in the diagnosis and treatment of diseases Radiograph  This is a picture (visible photographic record) on ...

most translucent area of anterior  nasal fossa the maxiallary central area  anterior nasla fossa the maxillary anterior periapical  incisive foramen visable on maxillary anterior periapilce  median palatal suture helps to distinugish max molar from mand molar/maxillary molar  maxillary sinus cutline visable floor of the maxillary sinus  maxiallary posterior area indicated maxillary molar are and helps jaw when no teeth are present  tubersoity the midline of man...

weekly chemical change  All of the following is true of automatic processors EXCEPT for overexposure  which of these is NOT a cause of fogging of the radiograph? Hydroquinone  Which developing chemical becomes extremely active when the temperature is raised? remove many of the long-wavelength x-rays  The purpose of the filter is to soak in liquid sterilant  What should NOT be done when handling contaminated phosphor storage plates? surfaces covered with barrier tape ...

If a patient tries to look at the technician during a panoramic radiograph, what will the image look like?  Teeth large on one side of the image and small on the other side What is used to take a panoramic radiograph?  Film cassette The computer used for digital imaging  can be used for other office functions which way do x-rays travel?  straight line A radiograph that is too light is most likely an example of what?  Underexposed A film that is too light is the result ...

what are the 6 chains of infection  1. Modes of transmission 2. Portal of Entry 3. Susceptible host 4.Infectious Agent 5.Reservoir 6. Portal of Exit What are the 8 modes of transmission?  1. Direct 2. Indirect 3. Airborne 4. Aerosol, spray, or spatter 5. Parenteral 6. Blood-Borne 7. Food and Water 8. Fecal-oral Direct Transmission  transmission of pathogens through person to person contact (including shaking hands), kissing, coughing, and sneezing EX:blood, saliva,...

Which is a safe practice in recapping of a needle?  one-handed scoop method A dental assistant has completed the series of injections for hepatitis B vaccination. The next step is to...  get a blood test for hbv antibodies. If patients indicate on their health history that they have active tuberculosis, this means that...  They should not have elective treatment performed in the dental office. How long should a surgical hand scrub take the dental assistant to perform?  2-6 m...

Palatine tonsils (tonsils)  tonsils Found at the side of the throat opposite the back of the tongue Tonsillar pillars  The vertical folds of tissue that lie in front of and behind the palatine tonsils in the lateral throat wall Vestibule  Space between the lips or cheeks and the teeth oral cavity proper  The area of the oral cavity bounded anteriorly and laterally by the teeth and posteriorly by the palatine tonsils Vermilion Zone  Red part of the lip where the lip mu...

Hydro elevators in low rise applications do not need an _____ _____ room.  overhead machine Some advantages of hydros are lower equipment and building construction costs because the load of a hydro is carried to the _____ where as the load of a traction car is carried by the _____ _____.  ground, building structure When drilling the jack hole, the only proper way to determine if the hole is plumb is to remove the drill stem and bit and use a _____ _____.  Spider Bob To plumb...